Window opener



Dec. 18, 192 s.-

, W. L. KRAEMER WINDOW OPENER FiledDBO- 23, 1926 2 Sheets-Sheet 1 INIVENTOR. A '6. M

M TORNEYS.

i ys

Patented Dec. s, 1928.

UNITED STATES PATENT OFFICE.

WALDO L. KBAEMER, OF BROOKLYN, YORK, ASSIGNOR TO KEA BFOTT ENGINEER ING COMPANY, INC'., A. CORPORATION OF NEW YORK.

WINDOW OPENER.

Application filed'llecember '23, 1926. Serial No. 156,641.

My invention relates to window control gear, and particularly to window opening and closing devices for use on shipboard.

The windows of many structures are frequently opened and closed,

and in certain types of structures it is essential that very substantial. positive, actuating means be provided forthe opening and closing. This requirement is particularly .im-

portant in the case of ships and other similar transportation vehicles in which it is required that windows be provided, and that positive means for opening and closing the windows be installed, in order that undertioned. Inconsequence, any window controlling structure, in order to, be satisfactory,

must be very rugged, very powerful, and.

not easily put .out of operation by twisting or the presence ofobstructions.

- My invention consists ofa window and operating means, and provides a clear pane of glass having'no window-frame, but adapt ed to cooperate with guiding ways positioned 85 in the window casing. The pane of glass isattached to a clamp at its lower edge, and a traversing screw with actuating gears, a handle and a traversing nut are provided. The nut has engaging members which cooperate with the clamp attached to the glass pane to carry it up and down under the control of the traversing screw when movement is imparted thereto by the gearsand attached handle, by the user. The structure provides suitable play between the various elements thereof at the points where warping or. twisting of the window casing might tend to cause a binding and thereby difliculty of operations. I My device is desirably formed om non-corrosive 0 materials such as bronze, and it'is very well adapted to service in the presence of salt andwhenso used shows no tendency types of habitable he screw tostick or fail because of corrosion of its various parts.

By the device of my invention, I provide means to meet all of the previously mentioned requirements, and to obtain many new and useful results which will be apparent from the following descriptionwhen read in connection with the accompanying drawings, wherein:

Fig. 1 is a view in vertical front elevation with the covering panels removed, of a preferred embodiment of my inven ion;

Fig. 2 is a view in horizontal section of the same embodiment;

Fig. 3 is a view in transverse section of the same embodiment, and

Fig. 4 is a view in vertical elevation, partly in, section of the traversing nut member of the same embodiment.

Referring to the drawings, I provide a Window casing 1 to which are secured e(guidewith ways 2 which may desirably be padd felt .3. A pane of glass 4 is adapted to slide in the ways 2, without the necesslty of a sub-, frame as is now required.

The glass pane 4 is supported and posi- 'tioned by a clamp'mernber 5 attached to the lower-edge thereof. The'clamp 5 may desirably consist of an angle member 6 as indicated in Fig. 3, having a bearing ledge 7 at the lower edge. A clamping plate 8 is provided and held in place by screws 9." A packing 11 which may be of rubber sheet or other suitable material is desirably provided betvlvee-n the' metal parts of the clamp and the g ass.

A traversing screw 12 is provided, and mounted in a special bearing14 at the bottom. The bearing is desirably attached to the bottom member of the window casing 1. A breast-rail member 15 is provided having a journal bearing member 16, substantially at the midpoint thereof and adapted to support the upper end of the traversing screw 12. Actuating gears, which may be a pair of spiral gears 17 and 18 are provided, the smaller gear 17 being attached to the upper end of the traversing: screw 12. Bearmg washers 19 are provided between the gear 17 and the journal bearing '16. Another washer 21 is positioned surrounding bearing I 12, anda nut 22 1s threaded over the sprojecting end of the screw 12, and caused casting the babbitt, and removing the man to bear ntly against the-washer 21 to secure drel,by passing a suitable tap therethrough a smooth easy bearing fit, and is held by a suitadapted to take a light finishing cut off of the able cotter-pin 23. The screw 12 is thus firminner surfaces. The nut 31 is provided with ly held in place between the bearing 16. in the a collar 33 integral therewith, at the lower breast-rail 15, and the step bearing 14:. The edge thereof, and with an integral hook memthrust uponsaid screw due to the load imber 34-.

posed upon it in the opening or closing of the A cooperating link member 35 is provided window is in both cases transmitted to and and attached to the clamp 5 and the glass carried bythejournal bearing 16 which is pane 4; b screws 36. The link member 35 is rigid with the breast rail 15. The gear 18 is provide with forwardly projecting arms 37 mounted upon a shaft 24 which is provided which are adapted to cooperate with projecwith a square end 25 which is adapted to tions 38 upon the collar member 33 of the nut v cooperate with a crank handle 26. The shaft 31. The weight of the glass pane is thus 24 1s passed throu h a suitable bearing inthe carried through the clamp 5, the link member breast-rail 15, as indicated. A bracket 27 is 35, the arms 37 the collar 33, and the nut 31.

provided, attached to the breast-rail and proupon the threads of the screw 12 and is acvided with. a journal bearing 29 adapted to cordingly raised and lowered by upward or coo erate with the shaft 24. The bea rings downward motion of the nut from rotation in t e breast-rail and bracket hold the gear 18 of the screw by the gears and handle. and the shaft 24 firmly in place and maintain The projections 38 upon the collar 33 of the accurate mesh between the geai's 17 and 18. nut 31 are particularly advantageous in their The breast-rail 15 is preferably formed of a cooperation with the arms 37 upon the link casting having a special channel section and member 35, since they permit a very free posiis thus'sufliciently stout to maintain accurate timing of the nut with respect to the glass mesh between the gears 17 and18 without re- 4 and the various clamping members, in the gard to twisting forces which may be applied upward and downward movement. This is to it. Likewise the gear 17 is closely adjaparticularly important because of the fact cent to the bearing 16 for the traversing screw that it avoidsany binding of the nut upon the 12, which bearingis a part of the breast-rail threads of the screw 12 which might other.- and accordin ly even an extreme amount of wiseoccur if the nut were rigidly fastened to' twist or displacement of the SCIQWSWlll not the link member and the glass, likewise it serve to disturb the meshing of the gears. avoids the production of 'sidewise stresses By this means very smooth,,firm,accurate op which might otherwise tend to break .the eration of the screw and gears is obtained. glass. The structure, as shown, carries the The spiral gearsas described for'the actu- 'weight of the glass upon the nut, with only provided to 000 ation of the traversing screw 12 are particularly advantageous in the device of my invention, since the permit the utilization of large, rugged, dura 'le ears in the very restricted space available. he utilization of any other type of gear involves either a widening of the space between the window and the casing in which-the opening device works orthe useof such small ars that a very serious loss in strength and durability occurs. V

A nut 31, as shown in detail in Fig. 4, is perate with-the screw 12. As shown, the nut is desirably formed of a casting, of a metal such as bronze. The threads therein ma be formed by tapping from the solid meta but I find, it desirable to use a high-pitch square-thread'on the screw 12, and

it is referable that the nut 31 be threaded in ano er manner, since. an internal thread of I the type described is 'diflicult to cut from the solid metal. I prefer to form the thread within the nut 31 by casting'therein a liner 32, of a bearing metal such as babbitt, which may desirably be cast about a mandrelof substantially the size and shape of the traversing screw 12. The babbitt may be anchored within the nut 31 in any convenient customary way, as by projections or-pockets. The thread may desirably be finished/after This is particularly advantageous since it provides for very smooth-and ea 0 ration .ofthe device, and is of substantia a vantage un'der diflicult operatingconditions as may occur when there is a severe racking of the structure.

The hook member 34 ofthe nut 31 is adapted to enter an opening in the link member 35 above the lower cross rtion to which the arms 37 are attached. nder normal conditions when the window operates freely, the hook 34 does not function. When, however, 'the window-pane is stuck, as mayoccur when .spra freezes upon the outer surface, the weig t ofthe window-pane ma not'be suflicient to free it from the grip of t e ice, and accordingly the window may not open upon movement of-the screw and nut downwar A small additional movement than brings the hook 34 into engagement with the link member 35 and a strong downward pullma be exerted thereon by] continued rotation o, the

e suflicient to free the-winmeans, no damage will be done the windowpane since the downward pull produced by the hook 34 has no twisting component but only a straight downward p'ull with no tendency to break off the lower edge of the glass as might otherwise occur if the arms 37 were firmly attached to the nut 31. Instead the worst that can happen is the application of sufficient pull to draw the clamp 5' off of the lower edge of the window-pane, upon which it is easily replaced by loosening the screws 9,

ldjusting in proper place and retightening It is to be noted that in the above'described operation -.whichoccurs when a downward pull is necessary, to open the window, that the force components are reversed as compared to those produced under normal operation. \Vhen the downward pull is exerted, upon the glass, a downward force only is applied to the clamping member and no sidewise forces are applied which might tend to break the glass. All of the sidewise and twisting components produced are concentrated in the nut. This disposition of forces does not avoid the tendency which may occur for the nut to work less easily upon the screw. This feature is however of advantage since it tends to prevent the application of undue forces to open the window and reduces the chance of sufficient force being applied to pull the clamp away from the bottom edge of the glass.

The device of my invention is particularly adapted to the actuation of heavy windowpanes without the use of a subframe, since the mechanism is conveniently attached directly ticularly advantageous because of the wide view obtainable and the lack of obstructing auxiliary frames. 4

By the device of my invention I have thus produced a simple, easily operated, rugged,

durable and convenient window controllmg device, which is particularly adapted to ship 4 through said sup foroperatin sai and other service and which is relatively inexpensive to build because of the small number and simplicity of the parts. I

While I ,have shown but a single embodiment of the device of my invention in'the ac companying description, it is capable of various modifications therefrom without departing from the spirit thereof, and it is desired, therefore, that only such limitations shall be imposed thereon as are required by the prior art or indicated by the appended claims.

I claim as my invention:

1. In a window opener, holding means adapted to-receive the lower edge of the window pane, a travelling nut, means for loosely connecting said nutwith said holding means for operating the same in both u ward and downward directions, a screw sha for traversing said nut, a bearing for supporting the upper end of said shaft and sustaining the thrust thereof in both directions, a support rigid with said bearing, and means extending through said support and supported thereby for operating said shaft. p 2. In a window opener, holding means adapted to receive the lower edge of, the win- .dow pane, a travelling nut, means for loosely connecting said nut with said holding means for operating the same in both upward and downward directions, ascrew shaft for traversing said nut, a'bearin'g for supporting the upper end of said shaft and sustaining the thrust thereof in both directions, a spiral gear on said shaft-adjacent said bearing, a support rigid with said bearing, and means extending rt and supported thereby shaft,said means comprising a spiral ive gear.

Inwitness whereof, I hereunto subscribe my signature.

' WALDO L. RAEMER. 

